Braking Action Uneven - Front to Rear. Chevrolet PJJ 2000

For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Hydraulic Brake Diagnostic System Check performed? | -- | Go to Step 2 | Go to Hydraulic Brake Diagnostic System Check

2

Inspect the disc brake rotors for the following:

• | Hot spots

• | Scored rotor surface

• | Grooved rotor surface

Refer to Brake Rotor Lateral Runout Check in Disc Brakes.

Do any of the above conditions exist?

--

Go to Step 3

Go to Step 4

3

1. Refinish the brake rotor. Refer to Brake Rotor Refinishing in Disc Brakes.
2. If refinishing the brake rotor results in a thickness that is less than the thinnest (Refinishing) thickness, replace the rotor. Refer to Brake Rotor Replacement in Disc Brakes.

Is the repair complete?

--

Go to Hydraulic Brake Diagnostic System Check

--

4

Inspect the following brake caliper assembly components for corrosion:

• | Mounting bolts

• | Sleeves

• | Steering knuckle

• | Brake caliper

• | Brake caliper piston

Are any of the above components corroded or sticking?

--

Go to Step 5

Go to Step 6

5 | Repair or replace calipers. Refer to Brake Caliper Overhaul or Brake Caliper Replacement in Disc Brakes. Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --

6

Inspect the disc brake pads and brake shoe linings for the following:

• | Excessive wear

• | Uneven wear

• | Abuse

• | Glazing

• | Contaminated lining material

• | Incorrect lining material

Do any of the above conditions exist?

--

Go to Step 7

Go to Step 8

7 | Replace the brake linings. Refer to Brake Pads Replacement in Disc Brakes or Brake Shoe Replacement in Drum Brakes. Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --
8 | Inspect the brake assembly for loose, missing or broken components. Refer to Brake Pad Inspection in Disc Brakes or Brake Shoe Inspection in Drum Brakes. Are there missing or loose brake assembly components? | -- | Go to Step 9 | Go to Step 10
9 | Tighten or replace loose or missing brake assembly components. Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --
10 | Inspect the hydraulic brake system for leaks. Are there any brake fluid leaks? | -- | Go to Step 11 | Go to Step 13

11

1. Tighten the brake hose or pipe fittings. Refer to Fastener Tightening Specifications .
2. Start the engine.
3. Press the brake pedal several times.
4. Turn OFF the engine.
5. Inspect the hydraulic brake system for leaks.

Has the leak returned?

--

Go to Step 12

Go to Hydraulic Brake Diagnostic System Check

12 | Replace the brake hose or pipe as necessary. Refer to Front Brake Hose Replacement , Rear Brake Hose Replacement or ISO Flares Replacement . Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --
13 | Inspect the brake caliper piston seal for leaks. Is the brake caliper piston seal leaking? | -- | Go to Step 14 | Go to Step 15
14 | Replace the brake caliper piston seal. Refer to Brake Caliper Overhaul in Disc Brakes. Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --
15 | Inspect the park brake for improper adjustment. Is the park brake improperly adjusted? | -- | Go to Step 16 | Go to Step 17
16 | Adjust or replace the park brake cable. Refer to Park Brake Cable Service/Adjustment in Park Brake. Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --
17 | Inspect for an internal leak within the master cylinder. Refer to Master Cylinder Diagnosis . Is there an internal leak within the master cylinder? | -- | Go to Step 18 | Go to Step 19
18 | Replace the master cylinder. Refer to Master Cylinder Replacement . Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --
19 | Inspect for contaminated or improper brake fluid. Is the brake fluid contaminated or improper? | -- | Go to Step 20 | Go to Step 21

20

1. Replace all rubber brake system components. Refer to the following procedure:

• | Front Brake Hose Replacement

• | Rear Brake Hose Replacement

• | Wheel Cylinder Overhaul

• | Master Cylinder Replacement

• | Brake Caliper Overhaul

2. Flush the hydraulic brake system. Refer to Hydraulic Brake System Flushing .

Is the repair complete?

--

Go to Hydraulic Brake Diagnostic System Check

--

21

Inspect the brake pipes and hoses for a restricted brake fluid passage. Check for the following:

• | Low fluid or no fluid output

• | Spurting of fluid while pressing the brake pedal

• | Particles suspended in the fluid

Refer to Hydraulic Brake System Bleeding .

Is there a restricted brake fluid passage?

--

Go to Step 22

Go to Step 23

22

1. Determine the area of the restriction. This will involve the disassembly of individual brake lines and checking for low or no fluid output
2. Flush the individual brake line or hose. Refer to Hydraulic Brake System Flushing .
3. If the restriction cannot be removed, replace the brake line or hose as necessary. Refer to Front Brake Hose Replacement , Rear Brake Hose Replacement or ISO Flares Replacement .
4. Flush the hydraulic brake system. Refer to Hydraulic Brake System Flushing .

Is the repair complete?

--

Go to Hydraulic Brake Diagnostic System Check

--

23 | Inspect for air in the brake system. Refer to Hydraulic Brake System Bleeding . Is there air in the brake system? | -- | Go to Step 24 | Go to Step 25
24 | Bleed the brake system. Refer to Hydraulic Brake System Bleeding . Is the repair complete? | -- | Go to Hydraulic Brake Diagnostic System Check | --
25 | Verify proper brake system operation. Does the original condition still exist? | -- | Go to Step 1 | --